Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 500-1000 cm long; 10-25 mm diam.; woody; without nodal roots. Culm-internodes terete; thick-walled, or solid. Culm-nodes glabrous. Lateral branches dendroid; intravaginal. Branch complement several; in a clump; with subequal branches; thinner than stem. Culm-sheaths glabrous; without auricles. Culm-sheath ligule 1 mm high. Culm-sheath blade triangular. Leaves 3-4 per branch. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule an eciliate membrane; 3-5 mm long. Collar with external ligule. Leaf-blade base broadly rounded; with a brief petiole-like connection to sheath; petiole 0.1-0.3 cm long. Leaf-blades deciduous at the ligule; lanceolate; 6-19 cm long; 11-23 mm wide; coriaceous; dark green. Leaf-blade venation with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins cartilaginous. Leaf-blade apex acuminate.
Inflorescence a panicle. Panicle open; linear; dense; 9-19 cm long; 1-2 cm wide. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2-3 mm long; scabrous.